The Brazilian Anthrush (Chamaeza ruficauda) has also been known as Rufous-tailed Antthrush, it has also previously been confused with Cryptic Antthrush (C. meruloides) but the song differs. See here for further details.
It is a relatively common bird locally, but a restricted-range species and can be difficult to locate until it sings. It occurs in protected areas, such as Serra dos Órgãos National Park, which is a lovely day trip out from REGUA.
The call of this bird is an unmistakable ascending stanza that evokes the high altitude mist-laid forests which they inhabit.
I was delighted to hear one calling recently at Macae de Cima and decided to follow it.

After only a few minutes could I see an adult guarding the entrance of its nest, these being hollows in tree trunks which can be quite deep. Standing back and with a zoom lens I was able to get a photograph or two.
Let’s hope they are successful in breeding their young and continue their guard of the forests.